Canal Overbridge at Cwm-tawe-isaf is a Grade II listed building in the Neath Port Talbot local planning authority area, Wales. First listed on 20 December 2002. Bridge.
Canal Overbridge at Cwm-tawe-isaf
- WRENN ID
- rusted-tallow-vale
- Grade
- II
- Local Planning Authority
- Neath Port Talbot
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 20 December 2002
- Type
- Bridge
- Address
- Canal Overbridge at Cwm-tawe-isaf, Godre'R-Graig, Ystalyfera
- OS grid reference
- SN 748 064
- Coordinates
- 51.7424, -3.81434
- Source
- Cadw listing
Description
The Canal Overbridge at Cwm-tawe-isaf is a 19th-century single arch bridge made of rubble stone. It features a segmental arch constructed with tooled cut stone voussoirs, one of which on the eastern side has scratched figures that may date to 1797. The abutments curve outward on each side, leading to square end piers. On the southwest side, there is a later 19th-century flight of 10 steps leading up to the bridge. The parapets and piers are topped with rounded copings made of cement.
Local climate
Canal Overbridge at Cwm-tawe-isaf sits in one of the wettest parts of the UK, with an average of 1,380 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.
It experiences an average of 28 freeze-thaw cycles a year, fewer than 69% of listed buildings. Of these, 12 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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